bq24031-Q1 Datasheet | Texas Instruments

bq24030-Q1 bq24031-Q1 SLUS793B - APRIL 2008 - REVISED OCTOBER 2009 SINGLE-CHIP CHARGE AND SYSTEM POWER-PATH MANAGEMENT IC Check for Samples: bq24030-Q1 bq24031-Q1 Features - 2 Qualified for Automotive Applications - Small 3.5-mm × 4.5-mm QFN Package - Designed for Single-Cell Li-Ion or Li-Polymer-Based Portable Applications - Integrated Dynamic Power-Path Management (DPPM) Feature Allowing AC Adapter or USB Port to Simultaneously Power the System and Charge the Battery - Power Supplement Mode Allows Battery to Supplement USB or AC Input Current - Autonomous Power Source Selection (AC Adapter or USB) - Integrated USB Charge Control With Selectable 100-m A and 500-m A Maximum Input Current Regulation Limits - Dynamic Total Current Management for USB - Supports up to 2-A Total Current - 3.3-V Integrated LDO Output - Thermal Regulation for Charge Control - Charge Status Outputs for LED or System Interface Indicates Charge and Fault Conditions - Reverse Current, Short-Circuit, and Thermal Protection - Power Good (AC Adapter and USB Port Present) Status Outputs - Charge Voltage: 4.1 V or 4.2 V APPLICATIONS - Smart Phones and PDAs - MP3 Players - Digital Cameras - Handheld Devices - Internet Appliances DESCRIPTION The bq TINY™ III series of devices are highly integrated Li-ion linear chargers and system power-path management devices targeted at space-limited portable applications. The bq TINY III series offer integrated USB-port and dc supply (AC adapter), power-path management with autonomous power-source selection, power FETs and current sensors, high accuracy current and voltage regulation, charge status, and charge termination in a single monolithic...